This high-speed microprocessor reconfigures your XC90′s ECU to work with HHO generators and save fuel. Replaces EFIE’s and other workarounds.

Installs behind the OBD-II port in minutes. Installation video and vehicle specific wiring print-outs are available on our website.

The Volo Chip replaces timing and fuel delivery values stored in the ECU’s temporary memory with optimized values. This produces the same results as expensive ECU upgrades, for a fraction of the cost. The Volo Chip DOES NOT alter rev and speed limiters.

No fine-tuning or vehicle knowledge required. Just install, hit the reset button for automatic calibration, and forget it. Comes pre-programmed with maps for Volvo 2.5L and 2.9L engines.

Makes no permanent changes to your XC90′s computer. Will not void your Volvo factory warranty and is emissions safe. Best of all, the Volo Chip is 100% guaranteed or your money back! Free firmware updates for life included with purchase.

The FS2The FS2 has been specifically tuned for the needs of HHO generator equipped vehicles. A dynamic 20MHz microprocessor, the FS2 will consider O2 levels, engine speed and load, intake air temp. and volume, along with many other variable to calculate HHO output and automatically adjust fuel delivery and timing for maximum gains.

GainsThe FS2 was designed to help your ECU accept HHO as a fuel supplement. Its output is dependent on the efficiency of your HHO system. When HHO is d